Hyundai - Santafe :: 2013 - Sudden Power Loss When Accelerating From A Slow Speed Coast
Oct 10, 2013
Occasionally, randomly, and unpredictably when accelerating from a slow speed coast I get no power response when I press down on the accelerator. It's as if the engine has stalled, but it has not. When the accelerator is held down for a few seconds (maybe 3 to 7) power comes back with a rush. Examples:
1. Making a U turn from a left turn late. Accelerate slowly forward, take foot off gas as the turn is initiated, press down on gas to accelerate out of the turn and get no immediate power response.
2. Making a left turn into a suicide lane. Accelerate to cross 2 traffic lanes, let off gas and coast slowly forward in the suicide lane while waiting for oncoming traffic to clear, traffic clears, press down on gas and get to response. Continue to press slowly down--no response. Hold the accelerator half or 3/4 down, power surges back after a few seconds.
3. Rolling slowly down a long left turn lane with foot off gas timing oncoming traffic, traffic clears, press down on gas to initiate the turn, no response. Let up on gas and press down again, no response, let up an press down again and car reacts normally.
Occurrences of this problem have been very random. I have spent a good deal of time in vacant parking lots trying to cause the problem to occur without any luck even though I know well the conditions under which it happens. I have left the car with the dealer but, of course, they can't observe the problem either. I have driven nearly 1000 miles without an incident and then had 2 occurrences within 4 miles of each other. I have about 5000 miles on the car and have logged 17 incidents.
Loosing power in traffic is, of course, dangerous. I was about to initiate action under California's Lemon Law when I went to England for 3 weeks in Sept. I rented an Audi A1 and to my surprise I experienced a very similar problem, but it happened much more often. An example would be entering a roundabout, letting up on the accelerator while looking at directional signs, reapplying accelerator pressure and getting no response. Unlike the Hyundai I didn't seem to lose all power, but couldn't get any acceleration. The Hyundai engine is the 4 cylinder turbo and has an electronic throttle. I don't know what the Audi had by way of mechanics. I'm at a complete loss; is there something I don't understand about electronic throttles? I don't have a clue about the source of this problem, but I know I need to get it resolved before I get rear ended.
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I have a 2010 santa fe with 19k miles.....twice this week i was driving and suddenly the gas pedal stopped working and engine light came on. brakes worked. Have "Sudden Unintended Deceleration"??
After the first event, i had it towed to the dealer (following protocol in the manual). they reported a new recall (it had been serviced a few months ago), executed a computer update and all was fixed (or so i thought).
4 days later, with less than 100 miles driven since the repair, it happened again. this time i was in 35mph traffic so when the accelerator pedal no longer worked, i almost was rear-ended. i was able to coast out of traffic (brakes and steering fine)to a side street. i was able to coast home (.5 mile or so). car would accelerate after stop signs, although the gas pedal doesn't respond at all. very scary that it even shifted to a higher gear and would go 30mph and keep accelerating if i didn't brake!
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It did this funny thing about 4-5 times over a span of about 24 hrs before dying and then won't start. It was like hitting the limit on a speed governed car.....sudden momentary loss of power..and it seemed to be when accelerating if that matters. The thing I'm sure of at this point is that the fuel pump is not coming on when the key is turned, I know that sound well, but also checked it at the external connector with a test light for thoroughness. I also found a blown fuse under the hood which coincided with a little smokey smell inside the car when the fuse was replaced and blew again.
There is no spark as well. My Haynes book says that the PCM is behind the passenger kick panel but I only see the eecv and it doesn't smell burnt. The IFS is good. There is power at the coil packs. Fuel pump relay fuse is good. Is it more likely the ccrm since it contains the fuel pump relay and PCM relay or could it still be the eecv? It feels like one part failed but is causing more than one "problem", no power to fuel pump and no spark.
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My 2004 Hyundai Santa Fe with 78K miles has never had any major problems until a month ago. I was doing errands and after my second errand the car would not start. AAA came jumped it, and I took it to a local shop where they replaced the battery. They said the rest of the car seemed just fine. The next week, after gassing up, the car again would not start. It made the same sound, like the engine was trying to turn over or it wasn't accessing the fuel. A bystander thought perhaps it was the oxygen sensor.
After resting for about 10 minutes, the car started and I drove it to a Hyundai dealership. They said the fuel pump needed to be replaced. It seemed fine after the replacement. A week later, the same thing happened. The car would not start. Not after 10 minutes, not after 30. AAA again was called and after I told them about the fuel pump they thought perhaps the relay was bad. They swapped the relay with one I wasn't using and the car started.
I, again, brought the car to the dealer. They inspected the whole car. There were no codes when they hooked it up to the computer and it drove just fine. They simply replaced the relay. Last night, the car made a funny sound upon starting, almost like a hissing or light clunking. This morning the car started fine. I drove for about 5 minutes and then the car stopped accelerating and the power steering seemed off. The car then died and would not start. I was in the middle of an intersection.
After about 15 minutes the cops came and pushed my car while I was in neutral. A few minutes later the car still would not start and it was towed back to the dealer. The car has been with the dealer for over 3 hours. They have driven it, tested it, driven it, tested it while driving. Everything. And they can't replicate the problem.
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On my '03 Santa Fe 2.7, this has happened twice, with 500 or so uneventful miles in between. At highway speed, it just all of a sudden loses power and will only go about 50 mph with accelerator to the floor. When you stop & put in neutral, it only revs to about 3000 rpm, with pedal to the floor -yet idles fine. Then when you shut it down, wait a few minutes & start it back up, it's fine. Is this a fuel problem or what?
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My SantaFe drives beautifully until it gets to about 50 - then it starts cutting out and decelerating. It seems as if it is not getting any power at all. It chugs out, powers back at the next lower gear, then settles in at about 45 mph.
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So my car has been dying. I was told they tested alternator, but they said it was charging and replaced my battery. So 1 week later it has had a few lights pop on but it didn't die... and so today it is just like it was before replacing the battery. Headlights and dashboard dim and a bunch of dashboard lights come on. Such as battery, abs, break, tcs, airbag and maybe something else.. after getting a jump it happened again and I noticed everything was stopping on the dashboard.. while driving even the speed jumped up and down and landed on 0... any tips?
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On a recent snowy drive from Chicago back home to Detroit, our 2013 Dodge Journey (6 cylinder AWD) started to make a screeching sound. My husband said it sounded like a belt. The sound would come and go. Due to the snow we were not able to go much over 45mph on the hwy. About 30 min after hearing the noise the first time, the car all of a sudden lost almost all acceleration. Not great when you are in the middle lane in snowy weather. We were able to get to the shoulder. After letting the car idle for a short time (3-4 min) in park and stepping on the gas peddle while in park, we took off again.
As long as we kept our speed 45-55mph for a short time the car would started to drive normal for 45-60 min, until it would happen again. One time we did not let the car rest for the normal 3-4 min and we were back on the shoulder again within a few min. The only warning light that came on once and then went out was the "check AWD" we have only driven the car locally a couple of times since, I was planning to take it to the Dodge dealership later this week. I fear this is a problem that is hard to duplicate, however this also concerns me as I normally drive a lot for work and often have several kids in my car on weekends.
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I came off the turnpike the other day stopped at a light and my car, 2006 Hyundai Elantra 175000 miles, started rolling backwards. I put my foot on the gas and there was no movement. Put the car and park and it wouldn't start. I pushed it into a gas station and the attendant (attendant, not mechanic there was no service station) changed the oil and added some coolant. The car then started up fine and I was able to drive a quarter mile to work. When I was driving home I immediately noticed that there was a change in acceleration. It takes forever for the car to speed up... Pedal to the floor and it is lagging greatly. It seems to be going up to 4500 rpms just to reach 40 mphs at a slow pace. Once the car gets up to 60 mph the rpms drop to normal. I haven't gone faster than 60 mph in it since this happened, but it seems to handle fine at that speed. The issue is getting up to that speed. I don't know if it is related, but the air conditioning is very weak since all this happened. I have to turn it off when I'm accelerating now. I've been planning on buying a new car soon, but I want this one to last just a little while longer.
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I have a 2006 Hyundai Sonata that squeaks when I turn left while in motion. It squeaks regardless of the degree of the turn but is more noticeable at slower speeds. The squeak isn't a screech so I don't think it's a belt. it isn't a grinding noise either. More like a "squeak, squeak, squeak." Seems to squeak with the rotation of the tire.
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I'm the second owner of a '13 Golf R with just over 11k miles. This car has been on APR Stage III since 17 miles. Since I took ownership of it, it has been slowly losing coolant. I seem to lose 1-2oz per week, and a thorough top and bottom inspection of the coolant lines in the engine bay hasn't revealed any obvious sources of leakage. I've had the oil analyzed, and there wasn't any sign of burning it or losing it into the crankcase, so I assume it is leaking and/or evaporating off somewhere.
The only thing that looked remotely like a possible source of loss is a tiny (maybe 3mm) white "crust" where the plastic end caps meet the aluminum core of the radiator. Is that a likely spot to lose coolant at such a slow rate? Are there any other usual suspects? I haven't let it drop down past the midpoint of the hashed "low" area, so damage from lack of coolant seems unlikely, but it is slightly disconcerting to be losing any.
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I am still failing to appropriately diagnose the problem(s) with my '03 Ford E-350 7.3L Powerstroke. This van has only 69,000 miles on it. A week or two back (just a few days back in work time) it suddenly went from running perfectly smooth, clean and wonderful to this:
- Zero power. Putting the van in gear and flooring the engine causes lots more smoke not nearly any rev of the engine and just a crawl forward.
- Lots of smoke out the back exhaust, whitish. I cannot discern wether it smells like diesel or oil (because I'm ignorant here), but the smell is very strong.
- After warming up and idling ~ 15 min I check under the coolant cap and see no signs of bubbling or disruption (from opening the cap in the coolant tank).
- After warming up there are no warning lights visible on the dash, and I don't have a computer to read codes (if there are any to read).
- I replaced the turbo up-pipes which had a visible leak previously. This did not hurt the symptoms, though no more visual leaks under the dog house.
- I thought maybe I put gasoline instead of diesel in the truck, not so.
- To do the above test I had to use the fuel pump to get gas out the tank to test. I hijacked the fuel pump output and turned the car on a few times to get gas out to a tank. The pump seemed to work just fine.
This was all very sudden which is perplexing, and, in use, the van was previously an ambulette and in my few miles with it (maybe 200-300 only) use was extremely light for such an engine/van, just driving around doing errands. I am not sure if this is relevant (no one has suggested so, yet) but before all this happened I uninstalled the rear HVAC that came with the van when I bought it. The AC lines were sealed under the hood. The coolant line was returned at the doghouse (you can see this at the beginning of the video).
At the moment the van has no power to go anywhere. I have not yet checked the CPS or IPC sensors, and understand this might be the next route in standard troubleshooting?
2003 Ford E 350 7.3L Trouble - YouTube....
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I just had my '12 GTI's 40,000 mile service done about 2 weeks ago. I put in a K&N air filter the day after the service. The only thing I noticed about the car after service was that I could smell coolant, they either spilled some or its burping some cause it was filled past the max fill line. Outside of that everything was copacetic until yesterday morning.
On my way to the gym with cruise control on ~74 mph on the highway I had sudden power loss, EPC light came on and power returned although felt reduced. When I left the gym it was off and I made it about a mile when under acceleration it hit at about 3k rpm, again sudden power loss and EPC light, power returned reduced. Drove about 5 miles to work and did a little googling with a million results.
When I left work to go home I made it about ten minutes into my drive before it happened. This time the CEL came on. I was able to drive home and back to work again this morning but I keep having power shutters followed by the EPC. I haven't had much time to dig into anything but I checked the connection of the coils and the intake connections with a flashlight at 4:30 this morning. Thinking it might be the MAF only because I recently installed the K&N and have read the oil can kill MAF's and I might stop to get a can of cleaner on my way home to try that route.
IF that doesn't work maybe I can get it on a Vag Com in the next couple days to get it sorted out.
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I have VW99 Passat 1.8L Turbo, automatic with 170K on it.
My car shop changed engine oil yesterday with 4 QTS of Mobile 5W40. Now, when I check my dipstick today, on level surface, the oil level is way too high on dipstick kink [the cross-hatched mark]. I run the engine, shut it off, and let it set for 3 min, but still the level is too high above the Mark. It wets the dipstick almost till the top of its Head.It was reading High when I first checked it, this morning, before starting my car.
It seems the oil is 'overfilled' or showing over filled; and the engine is about to throw it out from "filler cap" where Dipstick goes in the engine. I saw him using 4 cans 1 QTS oil, which I bought, into my car. They did change the "oil filter" at the same time?
Now, my car looses power while driving. When I accelerated from a stop/light, car slows down or limps. The car suffered a sudden loss of power.It runs awful for about a mile but smoothed out after acceleration.It feels like the car is running out of gas for a few seconds, then all of a sudden it kicks in. The car still drives ok though - No error messages/warnings on dash,CEL, no smoke, no hissing. I actually don't see engine oil thrown out or leaking though.
I don't know if the shop drained the "intercooler" while changing the oil, also I know nothing about its importance to my power loss issue. The net search manual/states "The engine oil, above the level, can be drawn into the crankcase ventilation system, and enter the atmosphere via the exhaust system". But it does says about damaging the engine/car.
Should I be worried about the damage to the engine?
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I have a 2004 F250 6.0 DuperDuty with about 170,000 miles on it, so far no major break-downs, just a starter and a blinker relay, but now I have a problem.
When I start now, the truck starts fine and it sounds fine, but it has almost no power even if I floor the gas peddle, there is a delay of like 2-3 seconds and then responds slowly, like some tractor. Eventually it starts to move slowly, and after it warms up (after a few minutes), the gas peddle responds more normal.
Also - at about 45mpg, at lower RPMs about 1250, the engine starts to shake (weird), it doesn't do it at idle about 850 RPM, or when I get it up to about 1800RPM+, but at about that 1250 RPM it does do it, luckily I driver locally for a few miles.
What could this be ? What exactly happens when I press on the gas peddle, what systems are involved and in which order?
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I've got a 2004 F250, 6.0, with 150k miles. I was pulling a motorcycle trailer uphill in the mountains when suddenly I couldn't go over 10 to 15 mph. All the gauges read good but it just couldn't get any power.
Got to the top and checked over everything. Didn't see any issues. Drove it home (200 miles) the next day. It drove okay on highway but it felt like the turbo wasn't coming on. Coolant was low and EGR was gunked up but only slightly wet. From what I read, it sounds like EGR cooler is failing but would that cause the turbo not to come on or feel like that loss of power? Reading another thread, I thought it might be the fuel pickup but I dropped the tank and the sending unit looked very good.
I'm ready to throw on a bulletproof egr cooler, oil cooler and rebuild the turbo if necessary but hate to get to the end and find out none of that worked.
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My 2011 6.7 suddenly lost power, started making noise and then stalled out.
After finding out that there are zero 24 hour service companies available in the LA area, I was able to get it towed to the local Ford dealer.the next day they told me it had dropped the #5 cylinder and that they would have to tear into it to find out what happened.
While I realize that any thoughts on the situation would be primarily idle speculation, what would cause this to happen at only 125,000 miles.
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My family has had this car for a long time. It worked fine for years but in the past year it has had some problems when starting. Sometimes the car starts fine, sometimes it won't start until you re-try a few times, sometimes it won't start and you can try over and over and it never does. When it doesn't start, it doesn't do anything at all, no sound or anything. The battery is not dead, the car has more than half a tank of gas. Recently, the car started fine, but after driving it for a while, we stopped at a stop light.
When we tried to accelerate after the stop, the car died, during the acceleration and a left turn. We got the car going again after trying a few times, but later that same trip, the car died again when accelerating, but this time it was from a slow speed, not a stop and it was while we were driving straight. The car is well taken care of (oil changes, check the oil, do not let it get to under a quarter of a tank, change transmission filter & oil, air filter, brakes, etc.) The timing chain is permanent, stainless steel. We do not drive very much but we are afraid to now that we don't know if it will die while we are driving.
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I have a 2012 SE 4 Cylinder Special Edition and just hit 60,000. Lately, I have been noticing this vibrating/shaking in the front of the car when I'm coasting or accelerating at a slow speed. What it could be? I got my front end alignment done thinking it could be that but it still continued.
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Ok I have an early 2004 F250. Recently changed out the #8 injector and then had to replace the ICP Sensor. Was running great then while driving down the road just died all of a sudden. Would start right back up with no issues. Continue driving and I am getting intermittent power loss. Also noticed that when it would lose power suddenly the glow plug light would come on.
Codes are P0102, P0113, P0272, and P1000.
P0102 Mass or Volume flow circuit low input
P0113 Intake Temp circuit High input
These are just soft codes not setting a light off. MAF is plugged in and I will check wiring here later after work but could this be causing my intermittent issues?
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Earlier this evening on the highway while in cruise control I had a strange issue. Going up a slight incline all of the sudden I lost power, my ESP and EPC lights came on, and the engine was running very strange.
It wasn't stuttering but was louder and vibrating a whole lot more than normal. I pulled over and shut the car off for a couple mins, started it up, everything was normal and continued. About an hour later the same thing happened and when I started up the car again the check engine light was on.
I had my room mate scan it when I got back and it came up with ECM and PCM processor errors. Not sure what kind of problems this would be. All the searches on cruise control didn't turn up anything like this. What the problem would be? The cars a turbo'd r32.
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